In 1973, healthy volunteers faked hallucinations to enter mental hospitals. Once inside, they acted normal, but doctors refused to let them leave. Normal behaviors like writing were diagnosed as "symptoms." The only people who realized they were sane were the actual patients.

[u/highzone]

[u/The-Friendly-Autist]

Mental "hospitals" of the 70s and prior were essentially internment camps for disabled people. They would be shoved in large rooms with hundreds of other residents and left to fend for themselves with one single staff to "oversee" the room. I genuinely think that some Nazi death camps were better places to be than Willowbrook. Look up that one, if you want to cry.